8. An eight-lane urban freeway is on rolling terrain. The traffic stream consists of primarilycommuters. A directional weekday peak-hour volume of 2500 vehicles are observed with800 vehicles arriving in the most congested 15-min period. If the traffic stream has 15%large trucks and buses and 15% recreational vehicles, determine the following:a. demand flow rate(vp)b. density (D)c. level of service (LOS)

Answered: 8. An eight-lane urban freeway is on…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Determine upper and lower estimates of how much water leaked from the water line during the hour.
An office supply company services copiers and tracks how many machines are serviced and the length of time (in minutes) for a service call. The data below for 11 clients is below. Sum X = 46 Sum Y= 234 Sum XY = 5797 Sum X2 =1180 Sum Y2 =146608 1) Calculate SSYY, SSXX, SSXY 2) Calculate b0, b1 3) Interpret the estimated slope coefficient.
The mtcars data set contains data on 32 cars from the 1974 Motor Trend US magazine. The data set has 11 variables that measure different aspects of the cars, such as miles per gallon (mpg), horsepower (hp), weight (wt), and number of cylinders (cyl). The data set can be used to study the relationship between fuel consumption and car performance, as well as other factors that affect the efficiency and design of the cars. What is the maximum and minimum number of the range regarding the explanatory variable for which the regression model can make valid predictions?
In the manufacture of commercial wood products, it is important to estimate the relationship between the density of a wood product and its stiffness. between the density of a wood product and its stiffness. A relatively new type of chipboard is being considered chipboard that can be formed much more easily than the already accepted commercial product. It is It is necessary to know at what density its stiffness is comparable to that of the well known and documented commercial product. documented commercial product. Thirty particleboard boards were produced with densities ranging from approximately 8 to 26 pounds per cubic foot and their stiffness was measured in pounds per square inch. The following table the data obtained are presented. Calculate the following with a significance level of 95%.It is recommended in excel
You Got Gas have developed a new type of fuel additive that supposedly increases car speed. Before they put it out on the market, however, they need to test if it really is a difference compared to standard fuel. So, they took 6 vehicles and calculated the time it takes to for them to drive 1 mile going as fast as they can. They received the following data: Car ID# Course time (standard fuel in minutes) Course time (w/ additive in minutes) 1 35 27 2 40 35 3 25 27 4 40 39 5 95 94 6 32 18 6. What is the null and research hypothesis for this study? 7. What type of statistical test should we use to compare means (z-test, independent t-test, dependent t-test, or ANOVA)? Why? 8. What are the degrees of freedom? What are the critical values for that statistical test with this data at α = 0.05? α = 0.01? 9. Comparing the groups, is there a significant difference at α = 0.05 in lap time between eating the name bran and when they ate Dog Go? 10. How would the researcher…

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